Navigation Links
The long, err, short of it
Date:3/25/2012

BOSTON, MANo one really wants the short end of the stick, in this case the short end of a chromosome. Telomeres, which are DNA-protein complexes at the ends of chromosomes, can be thought of as protein "caps" that protect chromosomes from deteriorating and fusing with neighboring chromosomes.

It is typical for telomeres to shorten as cells divide and chromosomes replicate over time. Now a new study from Brigham and Women's Hospital (BWH) suggest a strong link between telomere shortening and poor cardiovascular outcomes in patients with acute coronary syndrome.

The study is being presented at the American College of Cardiology 2012 Annual Scientific Session, March 24 to 26 in Chicago.

Scientists measured telomere length in 5,044 patients with an acute coronary syndrome who were followed for 18 months.

They evaluated the risk of cardiovascular death or heart attack based on telomere length and other characteristics.

Shorter telomeres were associated with older age, male gender, smoking, prior heart attack and heart failure; although, the correlation between each individual factor and telomere length was modest. Age, for example, only accounts for seven percent of the variability in telomere length.

Telomere length was strongly associated with risk of cardiovascular death or heart attack. Patients with shorter telomeres had the highest risk. This relationship was consistent across various age groups.

"We know that many different genetic and environmental factors, like diabetes, high cholesterol and smoking predispose patients to suffering cardiovascular events," said Christian T. Ruff, MD, MPH, Cardiovascular Division, BWH Department of Medicine, and lead study investigator. "Even when accounting for all of these other known risk factors, patients with short telomeres have an increased risk of having a heart attack or dying from heart disease."

Taking the research findings from bench to bedside, Ruff points out that measuring telomere length may be useful in a clinical setting, providing a sort of predictor for cardiovascular events.

"Telomere shortening may represent some sort of 'biological clock' which integrates the cumulative effect of environmental and genetic stresses on the body, both of which can contribute to cardiovascular events." said Ruff.

The researchers will continue to validate their findings to see if the relationship between telomere length and cardiovascular outcomes holds true in broader populations of patients. They also plan on experimenting on whether the rate of telomere shortening over time also predicts adverse cardiovascular events.

"In the future, we hope to identify clinical, biochemical and genetic characteristics that predict telomere shortening," said Ruff. "We hope to have the ability to determine if therapies and medications that impact these processes may delay telomere attrition and lessen the risk of cardiovascular events in these patients."


'/>"/>

Contact: Marjorie Montemayor-Quell
mmontemayor-quellenberg@partners.org
617-534-2208
Brigham and Women's Hospital
Source:Eurekalert

Related biology news :

1. Living long, living well
2. Big cats, wild pigs and short-eared dogs -- oh, my!
3. Shorter wait means longer life for kidney transplant candidates
4. Some short-term memories die suddenly, no fading
5. Shortcuts of the mind lead to miscalculations of weight and caloric intake, says Penn study
6. Short stressful events may improve working memory
7. Warmer environment means shorter lives for cold-blooded animals
8. Pitt research suggests EPA pesticide exposure test too short, overlooks long term effects
9. CSHL study finds short- and long-term memories require same gene but in different circuits
10. Short heels make elite sprinters super speedy
11. Short-term school closures may worsen flu pandemics, Pitt study finds
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/5/2016)... 2016 http://www.researchandmarkets.com/research/5kvw8m/global_facial ) ... "Global Facial Recognition Market 2016-2020" report ... ) has announced the addition of the ... report to their offering. --> ... announced the addition of the "Global ...
(Date:2/3/2016)... Vigilant Solutions announces today that the ... Missouri solved two recent hit-and-run cases with ... Vigilant Solutions. Brian Wenberg explains, "I ... was walking out of a convenience store and witnessed an elderly male back ... striking his vehicle and leaving the scene.  In his ...
(Date:2/2/2016)... Checkpoint Inhibitors for Cancer – Explore ... you interested in the future of cancer drugs? ... Visiongain,s report gives those predictions to 2026 at ... Avoid falling behind in data or losing ... those emerging cancer therapies can achieve. There you ...
Breaking Biology News(10 mins):
(Date:2/8/2016)... R&D program for the development of future natural products for ... research and development center in Israel ... Stockton has a variety of products adapted ... active in more than 35 counties worldwide. ... flagship product Timorex Gold ® is used to control ...
(Date:2/5/2016)... 2016 ATCC, the premier global biological materials ... medical and life science researchers that are working to ... CDC website . --> ... is a single-stranded RNA virus of the Flaviviridae family, ... and Chikungunya Viruses. Zika virus is transmitted to humans ...
(Date:2/4/2016)... ... February 04, 2016 , ... Morf Media Inc ., ... interactive FDA compliance training course, Writing Effective SOPs (Standard ... interactive course on Morf Playbook—now conveniently available on smartphones and PCs--provides step by ...
(Date:2/4/2016)... 2016 Beike Biotechnology, the Shenzhen ... a ceremony in late 2015 to mark their successful ... 2016. --> --> ... Personalized Cell Therapy" was hosted by the Shenzhen Cell ... subsidiaries of Beike Biotechnology Co., Ltd. ...
Breaking Biology Technology: